John Russell Fearn was a British author and one of the first British writers to appear in American pulp SF magazines.

A prolific author, he published his novels also as Vargo Statten and used various other pseudonyms such as Thornton Ayre, Polton Cross, Geoffrey Armstrong, John Cotton, Dennis Clive, Ephriam Winiki, and Astron Del Martia.

Fearn is known today primarily for his series of Golden Amazon SF stories.